|
Appendix 3 Metric Conversions
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METRIC CONVERSION FACTORS
|
To Convert From |
To |
Multiply By |
To Convert From |
To |
Multiply By |
|
Angle |
|
|
Mass per unit length |
|
|
|
degree |
rad |
1.745 329 E
-02 |
lb/ft |
kg/m |
1.488 164 E
+00 |
|
Area |
|
|
lb/in. |
kg/m |
1.855 797 E
+01 |
|
in.2 |
mm2 |
6.451 600 E
+02 |
Mass per unit time |
|
|
|
in.2 |
cm2 |
6.451 600 E
+00 |
lb/h |
kg/s |
1.259 979 E
-04 |
|
in.2 |
m2 |
6.451 600 E
-04 |
lb/min |
kg/s |
7.559 873 E
-03 |
|
ft2 |
m2 |
9.290 304 E
-02 |
lb/s |
kg/s |
4.535 924 E
-01 |
|
Bending moment or torque |
|
Mass per unit volume (includes density) |
|
lbf-in. |
N-m |
1.129 848 E
-01 |
g/cm3 |
kg/m3 |
1.000 000 E
+03 |
|
lbf-ft |
N-m |
1.355 818 E
+00 |
lb/ft3 |
g/cm3 |
1.601 846 E
-02 |
|
kgf-m |
N-m |
9.806 650 E
+00 |
lb/ft3 |
kg/m3 |
1.601 846 E
+01 |
|
ozf-in. |
N-m |
7.061 552 E
-03 |
lb/in.3 |
g/cm3 |
2.767 990 E
+01 |
|
Bending moment or torque per unit length |
lb/in.3 |
kg/m3 |
2.767 990 E
+04 |
|
lbf-in/in. |
N-m/m |
4.448 222 E
+00 |
Power |
|
|
|
lbf-ft/in. |
N-m/m |
5.337 866 E
+01 |
Btu/s |
kW |
1.055 056 E
+00 |
|
Corrosion rate |
|
|
Btu/min |
kW |
1.758 426 E
-02 |
|
mils/yr |
mm/yr |
2.540 000 E
-02 |
Btu/h |
W |
2.928 751 E
-01 |
|
mils/yr |
m/yr |
2.540 000 E
+01 |
erg/s |
W |
1.000 000 E
-07 |
|
Current density |
|
|
ft-lbf/s |
W |
1.355 818 E
+00 |
|
A/in.2 |
A/cm2 |
1.550 003 E
-01 |
ft-lbf/min |
W |
2.259 697 E
-02 |
|
A/in.2 |
A/mm2 |
1.550 003 E
-03 |
ft-lbf/h |
W |
3.766 161 E
-04 |
|
A/ft2 |
A/m2 |
1.076 400 E
+01 |
hp (550 ft-lbf/s) |
kW |
7.456 999 E
-01 |
|
Electricity and magnetism |
|
hp
(electric) |
kW |
7.460 000 E
-01 |
|
gauss |
T |
1.000 000 E
-04 |
|
|
|
|
To Convert From |
To |
Multiply By |
To Convert From |
To |
Multiply By |
|
maxwell |
mWb |
1.000 000 E
-02 |
Power density |
|
|
|
mho |
s |
1.000 000 E
+00 |
W/in.2 |
W/m2 |
1.550 003 E
+03 |
|
Oersted |
A/m |
7.957 700 E
+01 |
Pressure (fluid) |
|
|
|
W-cm |
W-m |
1.000 000 E
-03 |
atm
(standard) |
Pa |
1.013 250 E
+05 |
|
W circular - mil/ft |
mW-m |
1.662 426 E
-03 |
bar |
Pa |
1.000 000 E
+05 |
|
Energy (impact other) |
|
in. Hg (320F) |
Pa |
3.386 380 E
+03 |
|
ft-lbf |
J |
1.355 818 E
+00 |
in. Hg (600F) |
Pa |
3.376 850 E
+03 |
|
Btu (thermochemical) |
J |
1.054 350 E
+03 |
lbf/in.2 |
Pa |
6.894 757 E
+03 |
|
cal (thermochemical) |
J |
4.184 000 E
+00 |
torr (mm
Hg, 0 C) |
Pa |
1.333 220 E
+02 |
|
kW-h |
J |
3.600 000 E
+06 |
Specific heat |
|
|
|
W-h |
J |
3.600 000 E
+03 |
Btu/lb-F |
J/kg-K |
4.186 800 E
+03 |
|
Flow rate |
|
|
cal/g-C |
j/kg-K |
4.186 800 E
+03 |
|
ft3/h
|
L/min |
4.719 475 E
-01 |
Stress (force per unit area) |
|
|
ft3/min |
L/min |
2.831 000 E
+01 |
tonf/in.2
(tsi) |
MPa |
1.378 951 E
+01 |
|
gal/h |
L/min |
6.309 020 E
-02 |
kgf/mm2 |
MPa |
9.806 650 E
+00 |
|
gal/min |
L/min |
3.785 412 E
+00 |
ksi |
MPa |
6.894 757 E
+00 |
|
Force |
|
|
lbf/in.2
(psi) |
MPa |
6.894 757 E
-03 |
|
lbf |
N |
4.448 222 E
+00 |
MN/m2 |
MPa |
1.000 000 E
+00 |
|
kip (1000
lbf) |
N |
4.448 222 E
+03 |
Temperature |
|
|
|
tonf |
kN |
8.896 443 E
+00 |
F |
C |
5/9 (F -
32) |
|
kgf |
N |
9.806 650 E
+00 |
R |
K |
5/9 |
|
Force per unit length |
|
|
Temperature interval |
|
|
|
lbf/ft |
N/m |
1.459 390 E
+01 |
F |
C |
5/9 |
|
lbf/in. |
N/m |
1.751 268 E
+02 |
|
|
|
|
To Convert From |
To |
Multiply By |
To Convert From |
To |
Multiply By |
|
Fracture toughness |
|
|
Thermal conductivity |
|
|
|
ksi (sq.rt)
in. |
MPa (sq.rt.)
m |
1.098 800 E
+00 |
Btu-in./s-ft2-F |
W/m-K |
5.192 204 E
+02 |
|
Heat content |
|
|
Btu/ft-h-F |
W/m-K |
1.730 735 E
+00 |
|
Btu/lb |
kJ/kg |
2.326 000 E
+00 |
Btu-in./h-ft2-F |
W/m-K |
1.442 279 E
-01 |
|
cal/g |
kJ/kg |
4.186 800 E
+00 |
cal/cm-s-C |
W/m-k |
4.184 000 E
+02 |
|
Heat input |
|
|
Velocity |
|
|
|
J/in. |
J/m |
3.937 008 E
+01 |
ft/h |
m/s |
8.466 667 E
-05 |
|
kJ/in. |
kJ/m |
3.937 008 E
+01 |
ft/min |
m/s |
5.080 000 E
-03 |
|
Length |
|
|
ft/s |
m/s |
3.048 000 E
-01 |
|
A |
nm |
1.000 000 E
-01 |
in./s |
m/s |
2.540 000 E
-02 |
|
min. |
mm |
2.540 000 E
-02 |
km/h |
m/s |
2.777 778 E
-01 |
|
mil |
mm |
2.540 000 E
+01 |
mph |
km/h |
1.609 344 E
+00 |
|
in. |
mm |
2.540 000 E
+01 |
Velocity of rotation |
|
|
|
in. |
cm |
2.540 000 E
+00 |
rev/min
(rpm) |
rad/s |
1.047 164 E
-01 |
|
ft |
m |
3.048 000 E
-01 |
rev/s |
rad/s |
6.283 185 E
+00 |
|
yd |
m |
9.144 000 E
-01 |
Viscosity |
|
|
|
mile |
km |
1.609 300 E
+00 |
poise |
Pa-s |
1.000 000 E
-01 |
|
Mass |
|
|
stokes |
m2/s |
1.000 000 E
-04 |
|
oz |
kg |
2.834 952 E
-02 |
ft2/s |
m2/s |
9.290 304 E
-02 |
|
lb |
kg |
4.535 924 E
-01 |
in.2/s |
mm2/s |
6.451 600 E
+02 |
|
ton (short
2000 lb) |
kg |
9.071 847 E
+02 |
Volume |
|
|
|
ton (short
2000 lb) |
kg x 103 |
9.071 847 E
-01 |
in.3 |
m3 |
1.638 706 E
-05 |
|
ton (long
2240 lb) |
kg |
1.016 047 E
+03 |
ft3 |
m3 |
2.831 685 E
-02 |
|
kg x 103
= 1 metric ton |
|
|
fluid oz |
m3 |
2.957 353 E
-05 |
|
Mass per unit area |
|
|
gal (U.S.
liquid) |
m3 |
3.785 412 E
-03 |
|
oz/in.2 |
kg/m2 |
4.395 000 E
-01 |
Volume per unit time |
|
|
|
oz/ft2 |
kg/m2 |
3.051 517 E
-01 |
ft3/min |
m3/s |
4.719 474 E
-04 |
|
oz/yd2 |
kg/m2 |
3.390 575 E
-02 |
ft3/s |
m3/s |
2.831 685 E
-02 |
|
lb/ft2 |
kg/m2 |
4.882n428 E
+00 |
in.3/min |
m3/s |
2.731 177 E
-07 |
|
|
|
|
Wavelength |
|
|
|
|
|
|
A |
nm |
1.000 000 E
-01 |
|
|
|
|
|
|
|
SI
PREFIXES
|
Prefix |
Symbol |
Exponential Expression |
Multiplication Factor |
|
exa |
E |
1018 |
1 000 000 000 000 000 000 |
|
peta |
P |
1015 |
1 000 000 000 000 000 |
|
tera |
T |
1012 |
1 000 000 000 000 |
|
giga |
G |
109 |
1 000 000 000 |
|
mega |
M |
106 |
1 000 000 |
|
kilo |
k |
103 |
1 000 |
|
hecto |
h |
102 |
100 |
|
deka |
da |
101 |
10 |
|
Base Unit |
--- |
100 |
1 |
|
deci |
d |
10-1 |
0.1 |
|
centi |
c |
10-2 |
0.01 |
|
milli |
m |
10-3 |
0.001 |
|
micro |
m |
10-6 |
0.000 001 |
|
nano |
n |
10-9 |
0.000 000 001 |
|
pico |
p |
10-12 |
0.000 000 000 001 |
|
femto |
f |
10-15 |
0 000 000 000 000 001 |
|
atto |
a |
10-18 |
0 000 000 000 000 000 001 |
THE
GREEK ALPHABET
|
A, a -
Alpha |
I, i -
Iota |
R, r -
Rho |
|
B, b -
Beta |
K, k -
Kappa |
S, s -
Sigma |
|
G, g -
Gamma |
L, l -
Lambda |
T, t -
Tau |
|
D, d - Delta |
M, m - Mu |
U, u - Upsilon |
|
E, e - Epsilon |
N, n - Nu |
P, p - Phi |
|
Z, z - Zeta |
X, x - Xi |
C, c - Chi |
|
H, h - Eta |
O, o - Omicron |
Y, y - Psi |
|
Q, q - Theta |
P, p - Pi |
W, w - Omega |
|